Message boards :
Number crunching :
Checkpointing
Message board moderation
Author | Message |
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Sirius B Send message Joined: 26 Dec 00 Posts: 24912 Credit: 3,081,182 RAC: 7 |
Colour me dumb, but am I reading this right? Shutdown laptop (ID 8899358} early this morning with the tasks running showing approx. 83%. Booting up approx. 1 hour ago, tasks started from 0% (now at 16% approx.) On desktop, tasks continue from where they left off. |
Keith Myers Send message Joined: 29 Apr 01 Posts: 13164 Credit: 1,160,866,277 RAC: 1,873 |
Check your configuration settings for the laptop. See if it has local preferences set and no or a very long checkpoint interval. Or possibly it picked up web preferences from another project that does not have a checkpoint set. Also was this on a cpu task or gpu task? Seti@Home classic workunits:20,676 CPU time:74,226 hours A proud member of the OFA (Old Farts Association) |
W-K 666 Send message Joined: 18 May 99 Posts: 19401 Credit: 40,757,560 RAC: 67 |
Colour me dumb, but am I reading this right? What is the last option "Request tasks to checkpoint at most every" in the BOINC client - Options - Computing Preferences screen? |
Richard Haselgrove Send message Joined: 4 Jul 99 Posts: 14679 Credit: 200,643,578 RAC: 874 |
Let's be certain that this was a SETI task? They're usually OK, depending on the settings that others have mentioned. But other projects may not checkpoint so regularly, and some don't checkpoint at all. |
Sirius B Send message Joined: 26 Dec 00 Posts: 24912 Credit: 3,081,182 RAC: 7 |
8899358 tasks Only running Seti on web prefs which I've not changed since 13/2/19 & that was to reduce the cache. Checkpointing every 60 secs. |
Keith Myers Send message Joined: 29 Apr 01 Posts: 13164 Credit: 1,160,866,277 RAC: 1,873 |
The stock client interval is 60 seconds. But as Richard said, some projects don't checkpoint at all. It depends on the science application whether it checkpoints. Seti@Home classic workunits:20,676 CPU time:74,226 hours A proud member of the OFA (Old Farts Association) |
Sirius B Send message Joined: 26 Dec 00 Posts: 24912 Credit: 3,081,182 RAC: 7 |
I realise that, but who has mentioned other projects? Something is wrong, It is a dual core & of the 2 tasks that hit 83% yesterday morning before shutdown, 1 has completed & validated last night. The 2nd is now at 59+%, why has that not completed & why start again from 0% for both tasks? |
Siran d'Vel'nahr Send message Joined: 23 May 99 Posts: 7379 Credit: 44,181,323 RAC: 238 |
The stock client interval is 60 seconds. But as Richard said, some projects don't checkpoint at all. It depends on the science application whether it checkpoints. Hi Keith, All of mine are set at 600 secs. Even the web preference is at 600 secs. I don't remember ever changing it. My old laptop is running stock because it has to and it is at 600 secs ( probably because of the web preferences). Would it be wise to reduce that amount? Have a great day! :) Siran CAPT Siran d'Vel'nahr - L L & P _\\// Winders 11 OS? "What a piece of junk!" - L. Skywalker "Logic is the cement of our civilization with which we ascend from chaos using reason as our guide." - T'Plana-hath |
Sirius B Send message Joined: 26 Dec 00 Posts: 24912 Credit: 3,081,182 RAC: 7 |
Application SETI@home v8 8.00 Name 07oc12ab.13907.26833.13.40.251.vlar State Running Received Sun 16 Feb 2020 02:58:15 GMT Report deadline Thu 09 Apr 2020 08:57:57 BST Estimated computation size 183,887 GFLOPs CPU time 00:04:11 CPU time since checkpoint 00:04:11 Elapsed time 00:04:56 Estimated time remaining 05:17:10 Fraction done 1.535% Virtual memory size 110.33 MB Working set size 89.72 MB Directory slots/0 Process ID 1245 Progress rate 18.720% per hour Executable setiathome_8.00_x86_64-pc-linux-gnu Desktop on booting up, continued from where it left off & several tasks have completed. Yet the laptop, as one can see... |
W-K 666 Send message Joined: 18 May 99 Posts: 19401 Credit: 40,757,560 RAC: 67 |
Could it be that client thinks that your laptop 'switch off' is laptop 'sleep' and therefore doesn't need to save position. But why it doesn't checkpoint is baffling. |
Sirius B Send message Joined: 26 Dec 00 Posts: 24912 Credit: 3,081,182 RAC: 7 |
Not sure WK. I have Boinc stop running the app when exiting, then I shutdown the rigs. IIRC, some time in the past this was happening to many & again iirc, many aborted the tasks. Not sure what to do, so suspended both tasks, since that time, been running okay. Will wait until all tasks completed then have those 2 resume, if they still continue to avoid checkpointing, will just have to abort them. |
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